ECG rules
Which of these describes 2nd Degree AV Block, Type I?

2nd Degree AV Block, Type I

  • Rate

    40-100

  • Regularity

    Regular

  • P waves

    None

  • PRI

    None

  • QRS

    > 0.12; bizarre

  • Rate

    60-100

  • Regularity

    Irregular

  • P waves

    Upright and uniform

  • PRI

    0.12-0.20

  • QRS

    0.08-0.12

  • Rate

    Any

  • Regularity

    Regularly Irregular

  • P waves

    Upright and uniform

  • PRI

    Gradually lengthening until dropped

  • QRS

    0.08-0.12